Annealing box



Sept. l, 1925.

w. E. TROUTMAN ANNEALING BOX Filed Feb. 14, 1925 2 Smets-Sheet l lll m I l I mwa' I l l I llk if;

Sept. l, `1925. 1,552,096

i W. E. TROUTMAN ANNEALING BOX Filed Feb. 14, 1925 2 smug-sheer 2 1N ENTOR j@ l 17 I l? I/ md/m/ Patented Sept. l, 1925.A I

UNITED STATES 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOB T0 DUQUBNE STEEL FOUNDRY COMPANY, 0F PITTSB'UBGH,' PENNSYLVANIA, A CORPORATION l OF P- EN N SYLV'AN IA.

Application led February 14,

To all 'whom t may concern: v

Be it known that I, WILLIAM E. TRo U'r- MAN, a citizen of the United States, residing at Pittsburgh, count f of Allegheny, State of Pennsylvania, have invented a new and useful Improvement in Annealing Boxes, of which the following is a full, clear, and exact description.

The present invention Arelates broadly to annealing boxes, and more particularly to boxes of the cast type, although certain features of the invention' are adaptable fon use with other types of construction.

Due to the frequent changes in temperature to which annealing boxes are subjected, b

and also due to the unequal temperatures to which different portions thereof lare subjected at the same time, the boxes frequently tend to war twist and crack. One of the objects of t e present invention is to provide a construction of maximum strength, adapted to permit expansion and contraction as required, and designed to prevent spreading or buckling of the sides.

In the accompanying drawings there are shown, for purposes of illustration. only, preferred embodiments of the present invention, it being understood that the drawlngs do not'define the limits of the invention as changes in the construction disclosed-therein may be made without departing either from the spirit of the invention or the scope ef my broader claims.

Figure l is a side elevation, partly broken away, of an annealing box embodying the present invention, v Figure 2 is a transverse sectional view on the line. II-II of Figure 1,

VFigure 3 is a vertical sectional view on the line III- III of Figure 2,

Figure 4 is a detail sectional view illustrating a slightly modified embodiment of the invention,

Figure 5`is a top plan view, partly broken away, illustrating anotherl embodiment of the present invention,

Figure 6 is a side elevation, partly broken away, of the annealing box of Figure 5, and

Figure 7 is a transverse sectional view through the box of Figures 5 and 6, taken along the line VIL-VII of Figure 6.

In carrying out the present invention there may be rovided an annealing box having side Wa ls 2, end walls 3 and a top 1925. Serial No. 9,109.

wall 4, all of these walls referably being formed 1n one piece, as ycasting. EX- tending entirely around the bottom yof the annealing box there may be provided a thiclrened edge 5 serving not only as a supporting base but as a reinforcing means ding to prevent distortion of this edge from a true plane.

l The walls? of the box are preferably reinforced by corrugations 6 arranged in a plurality of spaced groups, each group preferably comprising a pair having an intermediate synclinal axis aa with an anticlinal axis bb on each side thereof. The ottoms of all of the corru ations preferably terminate in the lane org the inside surface of the wall in w ich they are provided whereby these corrugations do not interfere with the free use of the box in accordance with established practice.

he corrugations 6 preferably die out adjacent the bottom edge 5, there only bein sufficient depth of corru ation adjacent this edge to permit the smal amount of expansion and contraction due to the relatively lower temperatures to which this portion of the box is subjected. From the edge 5 on one side of the box the corrugations are preferably continuously extended to the edge on the opposite side thereof., For further reinforcing the side walls there may be pro-- vided laterally extending reinforcing ribs 7, these ribs preferably being alternately projected a greater distance to opposite sides of the corrugations whereby successive ribs overlap in the spaces between adv to prevent jacent groups of corrugations any buckling at these points.

The end walls are each preferably provided with a single group or pair of corrugations 8 of the character before described with the transversely extending ribs 9 uniformly disposed on each side of the corrugations and preferably of a length to extend substantially the full Width of the annealing box. These corrugations terminate in the edge 5 as before described and preferably also gradually die out adjacent the union of the end walls 3 with the top wall.

In usage, there is a considerable tendency for the sides of an annealing box to spread and for the top wall to fall into a greater or lesser extent. In order to counteract both of these tendencies, they are preferably provided with trussesl()` coinciding the sides of the annealing box "the anticlinal ranged in a plurality of spaced y with the 'synclinal axes of the groups of corrugations and formed to provide a gradually increasing cross-sectional area downwardly, as clearly shown in Figure 1. Preferably, each of these trusses has a bottom flange 11. By reference to Figure 3 of the drawings it will be noted that the bottom flanges join in a plane'below the point of union of the side walls with the top wall.- This tends to directly tie the side walls together to prevent spreading thereof, and also facilitates casting the boxes as acute angles are lthus eliminated.

In Fi e 4 of the drawings there is illustrated a slightly modified form of the invention in which parts rorresponding to. the parts already described are designated by the same reference characters having a prime affixed thereto. In this embodiment of the invention each of the corrugations is indicated as having an interiorly projecting rib or flange 12 coinciding with the anticlinal axis of the corrugatioii with which it cooperates. These ribs or flanges further tend to reinforce and stienV he side walls without interfering with the flexibility imparted to the wall, from a standpoint of expansion and contraction, by the corrugations.

In the form of the invention shown in Figures 5, 6 and 7, there is utilized the same general arrangement of reinforcing corrugations 16 both for the side and end walls of the annealing box. I have found, how(- ever, that in some cases it is desirable to substitute for the reinforcing ribs 7 a modi lied `system o-f ribs 17 which die out adjacent axes of each of the corrugations instead of extending .continuously thereacross. In this manner, greater flexibility froin a standpoint of expansion and contraction is permitted without material distortion of the corrugations. The ribs 17 ina be connected by vertically extending ribs 18 which alsoy tend to prevent bulging or sagging of the sides.

The advantages of the present invention arise from the provision of an annealing box having reinforcing means preventing buckling, warping, twisting o-r spreading f the walls without interfering with the use of the box as is now customary in the art.

I claim: l

1. An annealing box, having its side walls formed with reinforcing corrugations arranged lin a plurality of spaced groups.

2., An annealing box, having its side walls formed with reinforcing corrugations karpairs.

3. An annealing box, having its side `walls formed with vertically extending reinforcing corrugations arranged in a. plurality of spaced groups, thecorrugations in opposite sides being extended across the top wa the box.

4. An annealing box having reinforcing y ll ofcorrugations so grouped" as to forni at least one pair of reinforcing corrugations in each wall thereof.

5. An annealing box, having at least one pair of reinforcing corrugations formed in each wall thereof, and operating with certain of saidcorrugations` 6,.vv Anannealin box, having a'pair of corrugations forme lin the top wallthereof, and a reinforcing truss projecting downwardly from the top wall and 'located on 4the` synclinal axis of said pair of corrugaftions.

7.11111 annealing box, .having its top wall formed with reinforcing corrugations arranged in a plurality of spaced pairs, and

reinforcing ribs coa vreinforcing truss cooperating with eaoh pair of corrugations.

8. An annealing box, tending corrugations in its side and end walls, said corrugations being arranged in pairs, versely of said corrugations. 9. A n annealing box, having vertically extending corrugations in its side and end walls, said corrugations being arranged in pairs, and reinforcing ribs extending transversely and parallel to said corrugations.

10. An annealing box, having extending corrugations in its side and end walls, said corrugations being arranged in pairs, and reinforcingk ribs extending transversely and parallel to said corrugations, the transversely extending reinforcing ribs on the side walls of the annealing box extending in overlapping relationship in the spaces between adjacent pairs of corrugations.

11.4 In an annealing box, an inclosing wall having a pair of reinforcing corrugations therein, and a reinforcing rib projecting inwardly along the anticlinal axis of each corrugation.

12. An annealing box, having reinforcing corrugations grouped to form at least one pair of reinforcing corrugations in each side wall thereof.

13. An annealing box, having reinforcing corrugations grouped to format least one pair of reinforcing corrugations in each end wall thereof.

having vertically ex'-- verticallyl and reinforcing ribs extending trans-v 14. An annealing box, having vertically extending corrugations in its side and end walls, said corrugations being arranged in pairs and reinforcing ribs extending trans-- versely of saidl corrugations.

In testimony whereof I have hereunto set my hand. f

.. WILLIAM TROUTMAN. A 

